Unable to delete SharePoint Online sub-site. Sites that have subsites or certain apps can't be deleted.

Issue Details:

You can not delete a SharePoint site which has an active sub site under it. While trying to delete you see error occurred message.

SP hosted app (deployed by user)  is also technically created as a sub-site under the site where it is activated, the sub-site can not be deleted without uninstalling/deleting the app.

Solution:

In order to remove the sub-site, we have to remove all apps on this sub-site (Remember: Not from Site Collection). (It may ask you to go back to classic experience in SharePoint Online site).

Resolution Steps:

1. Click on gear icon, go to site contents 

2. Go to app 

3. App Setting

4. Remove/delete

 

Wait for few min until the message is shown. Now try deleting the site again and it should not show any issue now. 

:) 

Following Content feature takes you to access denied page in SharePoint online site

Issue Details: 
While trying to activate "Following Content" feature takes you to access denied page in a random SharePoint online site/sub-site.

Steps to repro: 
Go to site setting > Manage Site Features> Following Content > Click on activate > and you get access denied even if you are SCadmin.





Issue Resolution: Account used to create the site/sub-site can only activate this feature.

How to Resolve:

1. Make sure you know who created the site (Simple option > Go to site pages > default page or home page > version history > Version 1.0 modified by or created by

2. Login with that account or ask that user to login

3. Site Setting > Manage Site Features > "Following Content" > Activate.......done :)